The Ameritron ARI-500 Amplifier Radio Interface reads band data from your Icom, Yaesu, Kenwood or Alinco transceiver so they can remotely and automatically bandswitch your ALS-500M amp. Lets you mount your ALS-500M out-of-the-way in your trunk. Works with serial numbers above 13049 (below 13049 requires the ARF-500K, see above). You can add the ALS-500RC for manual bandswitching and data monitoring, etc.